Military spending has been trending downwards the entire time I’ve been alive. All that’s happened is increased spending elsewhere and even more debt. With very little apparent improvement to those social services spending outcomes. Usually the the opposite.

I might agree with cutting military spending if it’s an actual measurable impact to my finances. But I sure wouldn’t be for reallocating it to the black hole that is other federal spending. Fix the outcomes first. We already spend more on healthcare than most of those social democracies. Show me similar outcomes per dollar spent and then we can have a conversation about increasing it. Until then, it’s just more money funneled to the fraud and grift machine. Not that the military isn’t that too, but the difference to me is once you get the population “hooked” on such budgets you can never reduce it. The military is at least able to be reduced as shown in the past 30 years. Everything else is growing faster than those reductions.

I would also be generally for cutting military budget if it was 100% reallocated to reducing the debt. But that’s almost impossible since money is fungible.

TLDR; we’ve already tried reallocating and utterly failed at showing any reasonable outcomes.

Maybe we should approach this from the opposite angle. If it isn't military spending, what do you think the differentiator is between the US and those "social democracies" that OP mentioned? Do you think Americans are inherently more corrupt than the French?